diff --git a/MacInstallation_Homebrew.md b/MacInstallation_Homebrew.md
index fe9442e..f421cad 100644
--- a/MacInstallation_Homebrew.md
+++ b/MacInstallation_Homebrew.md
@@ -65,7 +65,7 @@ Note that on Lion, we need to be more explicit about SQLite.  Change version as
 After you install mapnik, you may try to import it and get `Fatal Python error: Interpreter not initialized (version mismatch?)`. If so, you likely have boost linked with the wrong version of python. To see what version of python boost is linked from, try:
 
 ```sh
-otool -L `brew list boost | grep python.*dylib` | grep -i python
+otool -L `brew list boost | grep python-mt.dylib` | grep -i python
 ```
 
 It's likely that your copy of boost was linked against the system python, but you're trying to use a homebrew python. To fix, uninstall boost, and reinstall with --build-from-source: